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ATMEGA644PA-MU

ATMEGA644PA-MU

ATMEGA644PA-MU

Microchip Technology

64KB 32K x 16 FLASH AVR 8-Bit Microcontroller AVR® ATmega Series ATMEGA644PA 44 Pin 20MHz 44-VFQFN Exposed Pad

SOT-23

ATMEGA644PA-MU Datasheet PDF

non-compliant

Technical Specifications

Parameter NameValue
TypeParameter
Factory Lead Time 7 Weeks
Contact PlatingTin
Mount Surface Mount
Mounting Type Surface Mount
Package / Case 44-VFQFN Exposed Pad
Surface MountYES
Number of Pins 44
Supplier Device Package 44-VQFN (7x7)
Number of Terminals 44
Mounting Style Through Hole
Interfaces SPI/USART
Data Converters A/D 8x10b
MSL MSL 3 - 168 hours
Qualification -
Family Name ATmega
Instruction Set Architecture RISC
Dimensions 7.1 x 7.1 x 0.95mm
Typical Operating Supply Voltage 1.8 → 5.5 V
Package Type VQFN
Maximum Operating Temperature+85 °C
Minimum Operating Temperature -40 °C
Number of I/Os 32 I/O
Interface Type SPI, TWI, UART
Manufacturer Microchip
Brand Microchip Technology / Atmel
Tradename AVR
RoHS Details
Package Tray
Base Product Number ATMEGA644
Mfr Microchip Technology
Product Status Active
Package Shape SQUARE
Number of I/O Lines 32
Operating Temperature-40°C~85°C TA
PackagingTray
Series AVR® ATmega
Published 2008
Pbfree Code yes
Part StatusActive
Moisture Sensitivity Level (MSL) 3 (168 Hours)
Number of Terminations 44
Terminal Position QUAD
Terminal FormNO LEAD
Terminal Pitch0.5mm
Reach Compliance Code compliant
Frequency 20MHz
Base Part Number ATMEGA644PA
Pin Count44
JESD-30 Code S-PQCC-N44
Qualification StatusNot Qualified
Supply Voltage-Max (Vsup) 5.5V
Power Supplies2/5 V
Temperature GradeINDUSTRIAL
Interface 2-Wire, I2C, SPI, UART, USART
Memory Size64kB
Oscillator TypeInternal
Number of I/O 32
Speed 20MHz
RAM Size 4K x 8
Voltage - Supply (Vcc/Vdd) 1.8V~5.5V
uPs/uCs/Peripheral ICs Type MICROCONTROLLER, RISC
Core Processor AVR
Peripherals Brown-out Detect/Reset, POR, PWM, WDT
Program Memory TypeFLASH
Core Size 8-Bit
Program Memory Size 64KB 32K x 16
Connectivity I2C, SPI, UART/USART
Supply Current-Max 9 mA
Bit Size 8
Data Converter A/D 8x10b
Watchdog TimerYes
Has ADC YES
DMA Channels NO
Data Bus Width 8b
PWM Channels YES
DAC Channels NO
Seated Height-Max 1 mm
Product Type8-bit Microcontrollers - MCU
ROM (words) 32768
EEPROM Size 2K x 8
On Chip Program ROM Width 16
CPU Family AVR RISC
Boundary Scan YES
Low Power Mode YES
Format FIXED-POINT
Integrated Cache NO
RAM (words) 4096
Number of UART Channels 2
RAM (bytes) 4096
Number of ADC Channels 8
Number of Serial I/Os 2
Number of Timers 3
ROM Programmability FLASH
Number of External Interrupts 3
Number of PWM Channels 6
Number of I2C Channels 1
On Chip Data RAM Width 8
Number of SPI Channels 3
Product MCU
Product Category8-bit Microcontrollers - MCU
Device CoreAVR
Height 950μm
Length 7.1mm
Width 7.1mm
REACH SVHC No SVHC
Radiation HardeningNo
RoHS StatusROHS3 Compliant
Lead Free Lead Free
In-Stock:989 items

Pricing & Ordering

QuantityUnit PriceExt. Price
1$6.92000$6.92
500$6.8508$3425.4
1000$6.7816$6781.6
1500$6.7124$10068.6
2000$6.6432$13286.4
2500$6.574$16435

ATMEGA644PA-MU Product Details

ATMEGA644PA-MU Overview


44-VFQFN Exposed Pad-packages are available. There are 32 I/O ports on this device. Device mounting type Surface Mount is the type of mounting that the Microcontroller uses. There is a 8-Bit core at the core of this MCU. There is a type of program memory called FLASH in the Microcontroller. There is a temperature range of -40°C~85°C TA for this Microcontroller. An electrical component of this type belongs to the AVR® ATmega series. This program memory has a size of 64KB 32K x 16, which indicates what the size of the program memory is. AVR Core processors are used in MCU. Devices of this type belong to the MICROCONTROLLER, RISC power supply/socket/peripheral ICs category. This chip has a total of 44 terminations on MCU chip. You get a 8-bit size. There are NO DMA channels on this Microcontroller chip. The part has a memory size of 64kB. The base part number ATMEGA644PA provides alternatives. This device is extremely efficient when operated at a frequency of 20MHz. Using the PWM channel YES, the device works with the motor. In this chip, 44 pins can be accessed. It has 44 pins in total. In addition to this, the device is embedded with the the AVR RISC CPU family. With 2 UART channels, it has all the features you may need. In total, it has 8 ADC channels for the measurement of signals. As far as the PWM channel count is concerned, the device makes use of 6 channels. As part of the design, the part has been designed to feature 1 channels for I2C communication. MCU chip is equipped with 2 serial I/Os in the part. In this part, there are 3 interrupts that are external to the system. There are 3 bits on a Integrated Circuit chip.

ATMEGA644PA-MU Features


44-VFQFN Exposed Pad package
Mounting type of Surface Mount


ATMEGA644PA-MU Applications


There are a lot of Microchip Technology
ATMEGA644PA-MU Microcontroller applications.


  • Television
  • Heater/Fan
  • Calculator
  • Kindle
  • Christmas lights
  • 3D printers
  • Washing machine
  • Microwave ovens
  • Home appliances
  • Home video and audio

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